Malicious PDF — malware analysis report

Static analysis result for SHA-256 f389540c15aec11b…

MALICIOUS

PDF

43.4 KB Created: 2020-09-02 13:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91311777f3adc74fbad9ea17c569a7ff SHA-1: c380b3e98b15160bef5c66e0352651024039a7c8 SHA-256: f389540c15aec11b52b6c613feaefa6181cc77898b4096a786895b266f956cb6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link that redirects to a known malicious domain, disguised with a seemingly benign keyword. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which point to benign Shopify domains but are likely part of a broader SEO poisoning or link farm strategy. The document body itself contains the lure text and the malicious URL.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wix?keyword=compare+and+contrast+essay+template+word
    • https://cdn.shopify.com/s/files/1/0434/9706/2564/files/ziferibojesozajisaxen.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.pdf
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/80685451642.pdf
    • https://static.usrfiles.com/ugd/b48b60_6ac45319efbf40c58e803302ebd889be.pdf
    • https://static.usrfiles.com/ugd/58a813_d36020313779455f9794e07cc4eb81d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_9861b9e5a22748e091115c8e140b1ca8.pdf
    • https://static.usrfiles.com/ugd/808d8c_8a620e6a37654f088012ee08f4ce4899.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bf3aa1a346e405286e7181b0cad3c62.pdf
    • https://static.usrfiles.com/ugd/b8c837_322e4f4a2bfd41cbb1aa844cf6c76590.pdf
    • https://static.usrfiles.com/ugd/911c12_fcac16d4fd5b491290e52ddced43fdce.pdf
    • https://static.usrfiles.com/ugd/764aaa_66e9a41bb7cc425e81fff042ba25c779.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/vupubowaduwenibegotuluro.pdf
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/business_school_book_in_english.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a71.bin
a3115a4977959b2f3a90dede93bf613d249d008943a4457a4fbe5a5751e69482		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A71 5316 bytes
font_01_sfnt_off00007c7d.bin
7948af7ff3ef9ae4725a18903ff542f5913662250fcb3f33260922b52241603f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7D 10780 bytes

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